I find that the live feed is difficult to scan because everything jumps to the right and down when a new photo is added. I recommend changing the grid location where a new photo is displayed instead of shifting the photos.
You should use something like Pretty Date for the timestamps: <a href="http://ejohn.org/blog/javascript-pretty-date/" rel="nofollow">http://ejohn.org/blog/javascript-pretty-date/</a>
I like it, very clean and works well.<p>I wonder what the application is for this though, do you have a use-case in mind? How many image services are you supporting?